Adding and Subtracting Mixed Numbers Made Easy

What is the first step when adding mixed numbers?

• Find a common denominator

• Add the whole numbers first

• Convert to improper fractions

• Add the fractions first

Tags

CCSS.7.NS.A.1C

When subtracting mixed numbers, what should you do first?

• Add the whole numbers

• Convert to improper fractions

• Find a common denominator

• Subtract the fractions first

Tags

CCSS.7.NS.A.1C

In Example 1, what is the least common denominator for 3/10 and 3/4?

• 30

• 20

• 4

• 10

What is the result of adding 7 and 3/10 to 1 and 3/4?

• 8 and 3/4

• 9 and 3/4

• 8 and 1/20

• 9 and 1/20

Tags

CCSS.5.NF.A.1

CCSS.5.NF.A.2

In Example 2, what is the common denominator for 1/2 and 1/5?

• 2

• 20

• 5

• 10

What is the result of adding 2 to 1/2 and 1/5?

• 2 and 1/10

• 2 and 9/10

• 2 and 3/5

• 2 and 1/2

Tags

CCSS.5.NF.A.1

CCSS.5.NF.A.2

In Example 3, what is the common denominator for 1/7 and 3/14?

• 7

• 28

• 14

• 21

What is the result of adding 4 and 2 to 1/7 and 3/14?

• 6 and 9/14

• 6 and 3/14

• 6 and 1/14

• 6 and 1/7

Tags

CCSS.7.NS.A.1C

In Example 4, what is the improper fraction form of 2 and 5/9?

• 25/9

• 20/9

• 18/9

• 23/9

What is the result of subtracting 1 and 5/6 from 2 and 5/9?

• 13/18

• 16/18

• 15/18

• 14/18

Tags

CCSS.7.NS.A.1C